Mechanisms of nonstationary self-focusing during pulse IR laser radiation propagation in a gaseous medium

Alexander M. Starik

doi:10.1117/12.376952

1 February 2000 Mechanisms of nonstationary self-focusing during pulse IR laser radiation propagation in a gaseous medium

Alexander M. Starik

Author Affiliations +

Proceedings Volume 3885, High-Power Laser Ablation II; (2000) https://doi.org/10.1117/12.376952
Event: Advanced High-Power Lasers and Applications, 1999, Osaka, Japan

Abstract

On the basis of developed physical and mathematical model the mechanisms and tendencies of nonstationary focusing lens formation in the beam channel under propagating of a pulse laser radiation in resonance absorbing gaseous medium and in the atmosphere were studied. The dynamics of self- interactions and change in refractive index under propagating of CO₂-, HF-laser radiation under resonance absorption by H₂O molecules in moist atmosphere were considered. The new characteristics of change in refractive index of molecular gas due to excitation of rotation degree of freedom when spectral lines of absorbing transitions were overlapped (low troposphere) have been estimated.

Citation Download Citation

Alexander M. Starik "Mechanisms of nonstationary self-focusing during pulse IR laser radiation propagation in a gaseous medium", Proc. SPIE 3885, High-Power Laser Ablation II, (1 February 2000); https://doi.org/10.1117/12.376952

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